Although there are many related questions, I don't see one that addresses adding multiple key/value pairs to an NSURLRequest.
I want to add a simple username and password to a request. I'm unsure of how to add multiple pairs, and also of the encoding. I get a valid connection and response, but the response indicates it hasn't been able to interpret the request properly.
Here's what I've got. Thanks in advance.
NSURL *authenticateURL = [[NSURL alloc] initWithString:#"https://www.the website.com/authenticate"];
NSMutableURLRequest *authenticateRequest = [[NSMutableURLRequest alloc] initWithURL:authenticateURL];
[authenticateRequest setHTTPMethod:#"POST"];
NSString *myRequestString = #"username=";
[myRequestString stringByAppendingString:username];
[myRequestString stringByAppendingString:#"&"];
[myRequestString stringByAppendingString:#"password="];
[myRequestString stringByAppendingString:password];
NSData *requestData = [NSData dataWithBytes:[myRequestString UTF8String] length:[myRequestString length]];
[authenticateRequest setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"content-type"];
[authenticateRequest setHTTPBody: requestData];
[authenticateRequest setTimeoutInterval:30.0];
connection = [[NSURLConnection alloc] initWithRequest:authenticateRequest delegate:self];
You're not using NSString correctly (your myRequestString, in fact, will read "username="). Instead, try this:
NSMutableString *myRequestString = [NSMutableString stringWithString:#"username="];
[myRequestString appendString:username];
[myRequestString appendString:#"&password="];
[myRequestString appendString:password];
Further to this great answer, just a typical example code:
-(NSString *)buildKeyValuePostString
{
NSString *username = #"boss#apple.com";
NSString *password = #"macintosh";
NSMutableString *r = [NSMutableString stringWithString:#""];
[r appendString:#"command=listFileNames"];
[r appendString:#"&"];
[r appendString:#"name=blah"];
[r appendString:#"&"];
[r appendString:#"user="];
[r appendString: [username stringByUrlEncoding] ];
[r appendString:#"&"];
[r appendString:#"password="];
[r appendString: [password stringByUrlEncoding] ];
return r;
}
and here's the category to do the difficult/annoying job of url encoding
-(NSString *)stringByUrlEncoding
{
return (NSString *)CFBridgingRelease(
CFURLCreateStringByAddingPercentEscapes(
NULL,
(CFStringRef)self,
NULL,
(CFStringRef)#"!*'();:#&=+$,/?%#[]",
kCFStringEncodingUTF8)
);
// with thanks to http://www.cocoanetics.com/2009/08/url-encoding/
// modified for ARC use 2014
}
Hope it helps someone.
Assuming that you mean that you want to add HTTP header fields to the request, use:
-addValue:forHTTPHeaderField:
Related
I have designing an alarm and according to that alarm I need to post on api what the user set as alarm, later api will handle the procedure and notif me if the alarm time is come. So basically, I searched all day long and come with those:
Here what I came so far with tons of efforts! Please help me for further..
NSMutableDictionary *alarmDic = [[NSMutableDictionary alloc] initWithCapacity:4];
NSLog(#"token: %#", self.token);
[alarmDic setObject:[NSNumber numberWithInteger:42] forKey:#"Token"];
NSLog(#"kur id: %lu", alarm.kurID);
[alarmDic setObject:[NSNumber numberWithInteger:alarm.kurID] forKey:#"CurrencyId"];
NSLog(#"not val: %f", alarm.kurAlis);
[alarmDic setObject:[NSNumber numberWithFloat:alarm.kurAlis] forKey:#"NotificationValue"];
NSLog(#"%ld", (long)alarm.kurTur);
[alarmDic setObject:[NSNumber numberWithInteger:alarm.kurTur] forKey:#"Type"];
NSData* jsonData = [NSJSONSerialization dataWithJSONObject:alarmDic
options:NSJSONWritingPrettyPrinted
error:nil];
NSLog(#"%#", [[NSString alloc] initWithData:jsonData
encoding:NSUTF8StringEncoding]);
NSString *dataLength = [NSString stringWithFormat:#"%lu", (unsigned long)[jsonData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"http://api-dvzalt.azurewebsites.net/api/Notification/PostNotification"]];
[request setHTTPMethod:#"POST"];
[request setValue:dataLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:jsonData];
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
if(conn) {
NSLog(#"Connection Successful");
} else {
NSLog(#"Connection could not be made");
}
In the log windows,
requestReply: Connection Successful
However, nothing happening on the api, telling this as always.
The requested resource does not support http method 'GET'.
Here is the confusion I have. It says connection succesful but on API, still the same. What should I do in this case? I might skip something but I can't figure out what I skip. I've done with the whole steps I suppose.
Note: API is working great, it is about my code most probably.
Thanks !
So I'm curious if you don't have a field name for the JSON data in your web handler? Something like "jsonData"? Right now you're stuffing the JSON data in your body, but there's no identifying field name for the handler to pull it out.
I'm thinking something like:
NSString jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSString requestString = [NSString stringWithFormat:#"jsonData=%#", jsonString];
Then encode requestString and use it in your body.
I am trying to add ability to my app to post a new article to a wordpress blog. I know that Wordpress has the XMLRPC, but I am having issues in implementing the wp.newPost as there is little documentation outside of Ruby PHP or JAVA.
Here is what I have in my app:
-(IBAction)postNews {
NSURL *xmlrpcURL = [NSURL URLWithString:#"https://myurl.wordpress.com/xmlrpc.php"];
NSString *username = #"email#yahoo.com";
NSString *password = #"password";
NSString *title = #"Test";
NSString *content = #"This is a test of posting to the news section from the app.";
NSString *myRequestString = [NSString stringWithFormat:#"username=%#&password=%#&content=%#", username, password, title];
// Create Data from request
NSData *myRequestData = [NSData dataWithBytes: [myRequestString UTF8String] length: [myRequestString length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL: xmlrpcURL];
// set Request Type
[request setHTTPMethod: #"POST"];
// Set content-type
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"content-type"];
// Set Request Body
[request setHTTPBody: myRequestData];
// Now send a request and get Response
NSData *returnData = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil];
// Log Response
NSString *response = [[NSString alloc] initWithBytes:[returnData bytes] length:[returnData length] encoding:NSUTF8StringEncoding];
NSLog(#"%#",response);
}
I constantly get the response:
<?xml version="1.0" encoding="UTF-8"?>
<methodResponse>
<fault>
<value>
<struct>
<member>
<name>faultCode</name>
<value><int>-32700</int></value>
</member>
<member>
<name>faultString</name>
<value><string>parse error. not well formed</string></value>
</member>
</struct>
</value>
</fault>
</methodResponse>
What am I doing wrong with this?
Ok, for those trying to do this, documentation for Obj-C is fairly difficult to find, but here is what I did. I first imported the XMLRPC Starter Kit from here. Next, in my app I defined the server username and password as it suggests, and in my action I used both an NSDictionary and NSArray for the post to go through. Again, this is for a simple text post to a wordpress blog.
NSString *server = kWordpressBaseURL;
XMLRPCRequest *reqFRC = [[XMLRPCRequest alloc] initWithHost:[NSURL URLWithString:server]];
NSDictionary* filter = #{
#"post_type": #"post",
#"post_status": #"publish",
#"post_title": #"Test Title",
#"post_content": #"Test Content",
};
NSArray *postParams = #[ #0, kWordpressUserName, kWordpressPassword, filter, #[#"post_title"]]; [reqFRC setMethod:#"wp.newPost" withObjects:postParams];
//The result for this method is a string so we know to send it into a NSString when making the call.
NSString *result = [self executeXMLRPCRequest:reqFRC];
[reqFRC release]; //Release the request
//Basic error checking
if( ![result isKindOfClass:[NSString class]] ) //error occured.
NSLog(#"demo.sayHello Response: %#", result);
Obviously, you can have text fields that you pull from for your blog post content, but this worked great!
U can add new posts using xmlrpc as given code
XMLRPCRequest *req = [[XMLRPCRequest alloc] initWithURL:[NSURL URLWithString:#"your url name"]];
NSArray *yourparameter = #[#0,#"your user id",#"your password"];
[request setMethod:#"wp.newPost" withParameters:yourparameter];
XMLRPCResponse *saveRessponse = [XMLRPCConnection sendSynchronousXMLRPCRequest:req error:nil];
NSLog(#"The Response is%#",[saveRessponse object]);
You can add new post using xml-rpc as
XMLRPCRequest *reqFRC = [[XMLRPCRequest alloc] initWithURL:[NSURL URLWithString:#"your url name"]];
// Set your url here.
NSArray *params = #[#0,#"your user id",#"your password"];
// Add your url parameters here.
[request setMethod:#"wp.newPost" withParameters:params]; // To add new post.
XMLRPCResponse *nodeSaveRessponse = [XMLRPCConnection sendSynchronousXMLRPCRequest:request error:nil];
NSLog(#"server response :%#",[nodeSaveRessponse object]);
Following problem:
I get every time the error -1000, but really don't know what I can change. I've tried it with GET and another sending method. But I get every time the same error.
Does someone see my mistake?
thanks
NSString *get =[[NSString alloc] initWithFormat:#"mobileNumber=%#&deviceToken=%#",myMobileNumber,myDeviceToken];
[get stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url=[NSURL URLWithString:[NSString stringWithFormat:#"http://myHomepage.net/login.php?%#",get]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:url];
NSError *error = [[NSError alloc] init];
NSHTTPURLResponse *response = nil;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *responseData = #"";
if ([response statusCode] ==200 )
{
responseData = [[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(#"---------responseData: %#",responseData);
return responseData;
} else {
You're not saving the result of stringByAddingPercentEscapesUsingEncoding. So, instead of:
[get stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
You need:
get = [get stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
FYI, while the above fix will now successfully percent escape all characters not permitted within in a URL, there are actually some characters that are acceptable in a URL, but are not acceptable within a parameter value (e.g. a + which is interpreted as a space, or & which delineates parameters).
It is important to percent escape the values used in the parameters of the request in such a way that you escape not only those characters that are not legal in a URL, but also a few that are otherwise legal in a URL, but are not permitted within a parameter value.
Unfortunately the standard stringByAddingPercentEscapesUsingEncoding method does not do this. But the CFURL function CFURLCreateStringByAddingPercentEscapes does. You apply this function to the individual parameter values. Here is a method that performs the necessary toll-free bridging between this function and ARC:
- (NSString *)percentEscapeString:(NSString *)string
{
NSString *result = CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
(CFStringRef)string,
(CFStringRef)#" ",
(CFStringRef)#":/?#!$&'()*+,;=",
kCFStringEncodingUTF8));
return [result stringByReplacingOccurrencesOfString:#" " withString:#"+"];
}
You can use this method as follows:
NSString *get =[[NSString alloc] initWithFormat:#"mobileNumber=%#&deviceToken=%#", [self percentEscapeString:myMobileNumber], [self percentEscapeString:myDeviceToken]];
NSURL *url=[NSURL URLWithString:[NSString stringWithFormat:#"http://myHomepage.net/login.php?%#",get]];
This should correctly percent escape the parameter values of the string, regardless of the presence of these reserved characters, or not.
I have created a small project that can read and insert data from iPhone to sql server via RESTful WCF service.
I have read the data successfully with the following approach:
1- I have created a wcf web service that read data from Sql serverwith table Employees(firstname,lastname,salary):
"41.142.251.142/JsonWcfService/GetEmployees.svc/json/employees"
2- I have created a new project in xcode 5.0.2, and I added a textfield (viewData.text) to display data retrieved by the web service.
3- I added the following instruction in my viewController.m :
"#define WcfSeviceURL [NSURL URLWithString: #"41.142.251.142/JsonWcfService/GetEmployees.svc/json/employees"]"
3- In (void)viewDidLoad method, I implemented the below code:
- (void)viewDidLoad
{
[super viewDidLoad];
NSError *error = nil;
NSData *data = [NSData dataWithContentsOfURL:WcfSeviceURL options:NSDataReadingUncached error:&error];
if(!error)
{
NSDictionary* json = [NSJSONSerialization
JSONObjectWithData:data
options:NSJSONReadingMutableContainers
error:&error];
NSMutableArray *array= [json objectForKey:#"GetAllEmployeesMethodResult"];
for(int i=0; i< array.count; i++)
{
NSDictionary *empInfo= [array objectAtIndex:i];
NSString *first = [empInfo objectForKey:#"firstname"];
NSString *last = [empInfo objectForKey:#"lastname"];
NSString *salary = [empInfo objectForKey:#"salary"];
//Take out whitespaces from String
NSString *firstname = [first
stringByReplacingOccurrencesOfString:#" " withString:#""];
NSString *lastname = [last
stringByReplacingOccurrencesOfString:#" " withString:#""];
viewData.text= [viewData.text stringByAppendingString:[NSString stringWithFormat:#"%# %# makes $%#.00 per year.\n",firstname,lastname,salary]];
}
}
}
Check the following link : http://www.codeproject.com/Articles/405189/How-to-access-SQL-database-from-an-iPhone-app-Via.
As I mentioned, I can read the data from my iPhone without any problem.
So the second step is how to write and insert data from the iPhone to sql server.
for this, I created first the method that insert data in my webservice:
In WCF interface:
[OperationContract]
[WebInvoke(Method = "POST",
ResponseFormat = WebMessageFormat.Json,
RequestFormat = WebMessageFormat.Json,
BodyStyle = WebMessageBodyStyle.Wrapped,
UriTemplate = "json/InsertEmployee/{id1}/{id2}/{id3}")]
bool InsertEmployeeMethod(string id1,string id2, string id3);
In Implementation:
public bool InsertEmployeeMethod(string id1,string id2, string id3)
{
int success = 0;
using (SqlConnection conn = new SqlConnection("server=(local);database=EmpDB;Integrated Security=SSPI;"))
{
conn.Open();
decimal value= Decimal.Parse(id3);
string cmdStr = string.Format("INSERT INTO EmpInfo VALUES('{0}','{1}',{2})",id1,id2,value);
SqlCommand cmd = new SqlCommand(cmdStr, conn);
success = cmd.ExecuteNonQuery();
conn.Close();
}
return (success != 0 ? true : false);
}
So to test this web servcie method use:
"41.142.251.142/JsonWcfService/GetEmployees.svc/json/InsertEmployee/myName/MylastName/6565"
Then to consume this method from iPhone I used the following approach:
I decalared the Define Instruction:
"#define BaseWcfUrl [NSURL URLWithString:
#"41.142.251.142/JsonWcfService/GetEmployees.svc/json/InsertEmployee/{id1}/{id2}/{id3}"]"
Then I implemented the Insert Employee Method related to click button.
-(void) insertEmployeeMethod
{
if(firstname.text.length && lastname.text.length && salary.text.length)
{
NSString *str = [BaseWcfUrl stringByAppendingFormat:#"InsertEmployee/%#/%#/%#",firstname.text,lastname.text,salary.text];
NSURL *WcfServiceURL = [NSURL URLWithString:str];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:WcfServiceURL];
[request setHTTPMethod:#"POST"];
// connect to the web
NSData *respData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
// NSString *respStr = [[NSString alloc] initWithData:respData encoding:NSUTF8StringEncoding];
NSError *error;
NSDictionary* json = [NSJSONSerialization
JSONObjectWithData:respData
options:NSJSONReadingMutableContainers
error:&error];
NSNumber *isSuccessNumber = (NSNumber*)[json objectForKey:#"InsertEmployeeMethodResult"];
//create some label field to display status
status.text = (isSuccessNumber && [isSuccessNumber boolValue] == YES) ? [NSString stringWithFormat:#"Inserted %#, %#",firstname.text,lastname.text]:[NSString stringWithFormat:#"Failed to insert %#, %#",firstname.text,lastname.text];
}
}
But the issue here, is in the following instruction:
NSString *str = [BaseWcfUrl stringByAppendingFormat:#"InsertEmployee/%#/%#/%#",firstname.text,lastname.text,salary.text];
Always the system returns a message 'Data parameter nil' with this line, knowing that the firstname.text, and lastname.text, salary are all filled and I can see their values with NSLog(#"First Name :%#",firstname.text)...
Can you please help on this?
Thanks in advance.
I don't think NSURLs stringByAppendingFormat will do what you want.
Try something like this:
#define kBase_URL #"41.142.251.142/JsonWcfService/GetEmployees.svc/json/%#"
#define kAuthAPI_InsertEmployee_URL [NSString stringWithFormat:kBase_URL, #"InsertEmployee/%#/%#/%#"]
//Setup session
NSError *error;
NSURL *requestURL = [NSURL URLWithString:[NSString stringWithFormat:kAuthAPI_InsertEmployee_URL,firstname.text,lastname.text,salary.text]];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:requestURL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
[request addValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request addValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setHTTPMethod:#"POST"];
NSData *postData = [NSJSONSerialization dataWithJSONObject:profileData options:0 error:&error];
[request setHTTPBody:postData];
etc. etc.
I'm sending base64 string to php server and its working well. Now I want to send another parameter as a string. Can anyone tell me what code need to add in below code.
Below code is working good for single parameter. How can we modify it for multiple parameters?
NSData *data = [UIImageJPEGRepresentation(imgeview.image,90) base64Encoding];
// Create your request string with parameter name as defined in PHP file
NSString *myRequestString = [NSString stringWithFormat:#"question_image=%#",data];
myRequestString = [myRequestString stringByReplacingOccurrencesOfString:
#"+" withString:#"%2B"];
// Create Data from request
NSData *myRequestData = [NSData dataWithBytes:[myRequestString UTF8String]
length:[myRequestString length]];
request = [[NSMutableURLRequest alloc] initWithURL:
[NSURL URLWithString:#"http://192.168.0.101/Mobile_tutor/webservice/question_details.php"]];
// set Request Type
[request setHTTPMethod:#"POST"];
// Set content-type
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"content-type"];
// Set Request Body
[request setHTTPBody:myRequestData];
// Now send a request and get Response
NSData *returnData = [NSURLConnection sendSynchronousRequest:request
returningResponse:nil
error: nil];
// Log Response
NSString *response = [[NSString alloc] initWithBytes:[returnData bytes]
length:[returnData length]
encoding:NSUTF8StringEncoding];
NSLog(#"-------------%#",response); // here you get reasponse string
For the network operation these is better supporting API like AFNetworking available witch work async and way better to handle
Tutorials for AFNetworking
Get from here
NSArray *keys = #[#"UserID", ];
NSArray *objects = #[#(userId)];
NSDictionary *parameter = [NSDictionary dictionaryWithObjects:objects forKeys:keys];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:
[NSURL URLWithString:BaseURLString]];
[httpClient setParameterEncoding:AFJSONParameterEncoding];
[httpClient registerHTTPOperationClass:[AFJSONRequestOperation class]];
NSMutableURLRequest *request = [httpClient requestWithMethod:#"POST"
path:#"services/UserService.svc/GetUserInfo"
parameters:parameter];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[httpClient registerHTTPOperationClass:[AFHTTPRequestOperation class]];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSError* error = nil;
id jsonObject = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingAllowFragments error:&error];
if ([jsonObject isKindOfClass:[NSDictionary class]]) {
// do what ever
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
}];
Given a NSDictionary "params" whose keys and values are strings and where every entry represents one parameter (name/value) you can define a helper category:
#interface NSDictionary (FormURLEncoded)
-(NSData*) dataFormURLEncoded;
#end
dataFormURLEncoded returns a properly encoded character sequence from the given parameters in the dictionary.
The encoding algorithm is specified by w3c: URL-encoded form data / The application/x-www-form-urlencoded encoding algorithm
It can be implemented as follows:
First, a helper function which encodes a parameter name, respectively a parameter value:
static NSString* x_www_form_urlencoded_HTML5(NSString* s)
{
// http://www.w3.org/html/wg/drafts/html/CR/forms.html#application/x-www-form-urlencoded-encoding-algorithm , Editor's Draft 24 October 2013
CFStringRef charactersToLeaveUnescaped = CFSTR(" ");
CFStringRef legalURLCharactersToBeEscaped = CFSTR("!$&'()+,/:;=?#~");
NSString *result = CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(
kCFAllocatorDefault,
(__bridge CFStringRef)s,
charactersToLeaveUnescaped,
legalURLCharactersToBeEscaped,
kCFStringEncodingUTF8));
return [result stringByReplacingOccurrencesOfString:#" " withString:#"+"];
}
Finally, dataFormURLEncoded composes the character sequence of the encoded parameters. A "parameter" will be composed by concatenating the encoded name, = and encoded value:
parameter := name "=" value
Then, the parameter list will be composed by concatenating the parameters by separating them by a "&":
parameters := parameter ["&" parameter]
It can be implemented as below:
#implementation NSDictionary (FormURLEncoded)
-(NSData*) dataFormURLEncoded {
NSMutableData* data = [[NSMutableData alloc] init];
BOOL first = YES;
for (NSString* name in self) {
#autoreleasepool {
if (!first) {
[data appendBytes:"&" length:1];
}
NSString* value = self[name];
NSData* encodedName = [x_www_form_urlencoded_HTML5(name) dataUsingEncoding:NSUTF8StringEncoding];
NSData* encodedValue = [x_www_form_urlencoded_HTML5(value) dataUsingEncoding:NSUTF8StringEncoding];
[data appendData:encodedName];
[data appendBytes:"=" length:1];
[data appendData:encodedValue];
first = NO;
}
}
return [data copy];
}
#end
Note: The character sequence encodes the strings using Unicode UTF-8.
Example:
Given your parameters:
NSDictionary* params = #{#"a": #"a a", #"b": #"b+b", #"c": #"ü ö"};
NSData* encodedParamData = [params dataFormURLEncoded];
Now, encodedParamData will be added to your body whose content type is application/x-www-form-urlencoded.
The encoded parameter string becomes:
a=a+a&b=b%2Bb&c=%C3%BC+%C3%B6